PERAMBATAN RETAK (CRACK PROPAGATION) TAP BOLT UNC - OIL COATED ASTM 325 . JTM [Internet]. 31 Oktober 2012 [dikutip 10 September 2025];2(1):20-5. Tersedia pada: https://jtm.itp.ac.id/index.php/jtm/article/view/669